Minolta MAGICOLOR 2 Manual page 17

1 Place the envelopes on a flat surface, and flatten them by
pressing down the corners.
2 Flex the envelope stack (including the
edges) to remove any stiffness.
3 Correct any dog-eared corners, and
then tap the envelopes on a flat surface
to align them
4 Remove the media cassette from the printer (and remove any
media in the cassette).
The media cassette must be located in the upper position, not in
the optional lower input feeder.